package com.Tao.utils;


import org.apache.ibatis.io.Resources;
import org.apache.ibatis.session.SqlSession;
import org.apache.ibatis.session.SqlSessionFactory;
import org.apache.ibatis.session.SqlSessionFactoryBuilder;

import java.io.IOException;
import java.io.InputStream;

public class MybatisUtils {

    private static SqlSessionFactory sqlSessionFactory; //提升作用域
    //获取工厂，固定代码
    static {
        try {
            String resource="mybatis-config.xml";
            InputStream inputStream = Resources.getResourceAsStream(resource);
            sqlSessionFactory = new SqlSessionFactoryBuilder().build(inputStream);
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
    //获取sqlSession
    //SqlSession完全包含了面向对象数据库执行SQL命令所需的方法
    public static SqlSession getSqlSession(){ return sqlSessionFactory.openSession();}
}
